Abstract

Patterns of morphological divergence across species’ ranges can provide insight into local adaptation and speciation. In this study, we compared phenotypic divergence among 4,221 crickets from 337 populations of two closely related species of field cricket, Gryllus firmus and G. pennsylvanicus, and their hybrids. We found that these species differ across their geographic range in key morphological traits, such as body size and ovipositor length, and we directly compared phenotype with genotype for a subset of crickets to demonstrate nuclear genetic introgression, phenotypic intermediacy of hybrids, and essentially unidirectional mitochondrial introgression. We discuss how these morphological traits relate to life history differences between the two species. Our comparisons across geographic areas support prior research suggesting that cryptic variation within G. firmus may represent different species. Our study highlights how variable morphology can be across wide-ranging species and the importance of studying reproductive barriers in more than one or two transects of a hybrid zone.

Addeddate

2024-09-09 23:30:06

Bhl_virtual_titleid

210920

Bhl_virtual_volume

v.32:no.2 (2023)

Call number

10_3897_jor_32_90713

Call-number

10_3897_jor_32_90713

Foldoutcount

0

Genre

article

Identifier

geographicvaria32byer

Identifier-ark

ark:/13960/s226hkddwst

Identifier-bib

10_3897_jor_32_90713

Identifier-doi

10.3897/jor.32.90713

Issue

2

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

87

Page_number_module_version

1.0.5

Page_range

189-200

Pages

12

Pdf_degraded

invalid-jp2-headers

Pdf_module_version

0.0.25

Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

Journal of Orthoptera Research 32(2)

Year

2023

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